Question

2008 Chevrolet with engine code P0121, how do I fix or reset this code?

Answer 1

Hi there,

In most cases when you have this code there is a problem with the throttle position sensor. Some vehicles use an electronic throttle body and the individual TPS sensor has to be replaced with the throttle body. Others can be replaced individually. You will have to replace it in most cases to clear the code and have it remain gone.

Answer 2

P0121 CHEVROLET Code - Throttle Position Sensor 1 Performance

Read more: https://www.autocodes.com/p0121_chevrolet.html